Wafer Type Butterfly Valve: 1) Size:DN 50 - 300 2)Nominal pressure:PN10 PN16 Wafer Type Butterfly Valve SizeDN50 - 300Design StandardAPI 609End flangeANSI 150# /PN10/PN16Top flangeISO 5211 BodyDuctile iron,Stainless steel,WCBDiscDuctile iron,CF8,CF8M,C95400Stem416,420,431,316SeatNBR,EPDMSuitale mediumSewage, Sea water, Air, Foodstuff and Oil These products are widely used in water source projects ...